更正系数是补退电费的重要依据，但更正系数中的功率因数角也是未知数。
Correction coefficient is important to electric charge refund, but its power factor Angle is unknown.
介绍了整流装置的功率因数的特点，分析了导通角的控制方法。
The Method of Group-Control for Electronic Ballasting of the High Power Factor;
介绍了整流装置的功率因数的特点，分析了导通角的控制方法。
The Method of Group-Control for Electronic Ballasting of the High Power Factor;
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